327 lines
11 KiB
Makefile
327 lines
11 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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include ../../../../scripts/Kbuild.include
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include ../../../scripts/Makefile.arch
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CURDIR := $(abspath .)
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LIBDIR := $(abspath ../../../lib)
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BPFDIR := $(LIBDIR)/bpf
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TOOLSDIR := $(abspath ../../../include)
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APIDIR := $(TOOLSDIR)/uapi
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GENDIR := $(abspath ../../../../include/generated)
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GENHDR := $(GENDIR)/autoconf.h
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ifneq ($(wildcard $(GENHDR)),)
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GENFLAGS := -DHAVE_GENHDR
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endif
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CLANG ?= clang
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LLC ?= llc
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LLVM_OBJCOPY ?= llvm-objcopy
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BPF_GCC ?= $(shell command -v bpf-gcc;)
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CFLAGS += -g -Wall -O2 $(GENFLAGS) -I$(APIDIR) -I$(LIBDIR) -I$(BPFDIR) \
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-I$(GENDIR) -I$(TOOLSDIR) -I$(CURDIR) \
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-Dbpf_prog_load=bpf_prog_test_load \
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-Dbpf_load_program=bpf_test_load_program
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LDLIBS += -lcap -lelf -lrt -lpthread
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# Order correspond to 'make run_tests' order
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TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
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test_align test_verifier_log test_dev_cgroup test_tcpbpf_user \
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test_sock test_btf test_sockmap get_cgroup_id_user test_socket_cookie \
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test_cgroup_storage test_select_reuseport \
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test_netcnt test_tcpnotify_user test_sock_fields test_sysctl test_hashmap \
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test_cgroup_attach test_progs-no_alu32
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# Also test bpf-gcc, if present
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ifneq ($(BPF_GCC),)
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TEST_GEN_PROGS += test_progs-bpf_gcc
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endif
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TEST_GEN_FILES =
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TEST_FILES = test_lwt_ip_encap.o \
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test_tc_edt.o
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# Order correspond to 'make run_tests' order
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TEST_PROGS := test_kmod.sh \
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test_xdp_redirect.sh \
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test_xdp_meta.sh \
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test_xdp_veth.sh \
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test_offload.py \
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test_sock_addr.sh \
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test_tunnel.sh \
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test_lwt_seg6local.sh \
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test_lirc_mode2.sh \
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test_skb_cgroup_id.sh \
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test_flow_dissector.sh \
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test_xdp_vlan_mode_generic.sh \
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test_xdp_vlan_mode_native.sh \
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test_lwt_ip_encap.sh \
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test_tcp_check_syncookie.sh \
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test_tc_tunnel.sh \
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test_tc_edt.sh \
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test_xdping.sh \
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test_bpftool_build.sh
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TEST_PROGS_EXTENDED := with_addr.sh \
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with_tunnels.sh \
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tcp_client.py \
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tcp_server.py \
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test_xdp_vlan.sh
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# Compile but not part of 'make run_tests'
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TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \
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flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \
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test_lirc_mode2_user xdping test_cpp
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TEST_CUSTOM_PROGS = urandom_read
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include ../lib.mk
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# Define simple and short `make test_progs`, `make test_sysctl`, etc targets
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# to build individual tests.
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# NOTE: Semicolon at the end is critical to override lib.mk's default static
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# rule for binaries.
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$(notdir $(TEST_GEN_PROGS) \
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$(TEST_PROGS) \
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$(TEST_PROGS_EXTENDED) \
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$(TEST_GEN_PROGS_EXTENDED) \
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$(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ;
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$(OUTPUT)/urandom_read: urandom_read.c
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$(CC) -o $@ $< -Wl,--build-id
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$(OUTPUT)/test_stub.o: test_stub.c
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$(CC) -c $(CFLAGS) -o $@ $<
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BPFOBJ := $(OUTPUT)/libbpf.a
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$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/test_stub.o $(BPFOBJ)
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$(OUTPUT)/test_dev_cgroup: cgroup_helpers.c
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$(OUTPUT)/test_skb_cgroup_id_user: cgroup_helpers.c
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$(OUTPUT)/test_sock: cgroup_helpers.c
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$(OUTPUT)/test_sock_addr: cgroup_helpers.c
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$(OUTPUT)/test_socket_cookie: cgroup_helpers.c
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$(OUTPUT)/test_sockmap: cgroup_helpers.c
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$(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c
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$(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c
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$(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c
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$(OUTPUT)/test_cgroup_storage: cgroup_helpers.c
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$(OUTPUT)/test_netcnt: cgroup_helpers.c
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$(OUTPUT)/test_sock_fields: cgroup_helpers.c
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$(OUTPUT)/test_sysctl: cgroup_helpers.c
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$(OUTPUT)/test_cgroup_attach: cgroup_helpers.c
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.PHONY: force
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# force a rebuild of BPFOBJ when its dependencies are updated
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force:
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$(BPFOBJ): force
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$(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/
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BPF_HELPERS := $(OUTPUT)/bpf_helper_defs.h $(wildcard $(BPFDIR)/bpf_*.h)
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$(OUTPUT)/bpf_helper_defs.h:
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$(MAKE) -C $(BPFDIR) OUTPUT=$(OUTPUT)/ $(OUTPUT)/bpf_helper_defs.h
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# Get Clang's default includes on this system, as opposed to those seen by
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# '-target bpf'. This fixes "missing" files on some architectures/distros,
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# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
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#
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# Use '-idirafter': Don't interfere with include mechanics except where the
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# build would have failed anyways.
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define get_sys_includes
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$(shell $(1) -v -E - </dev/null 2>&1 \
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| sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }')
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endef
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# Determine target endianness.
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IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \
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grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
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MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
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CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG))
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BPF_CFLAGS = -g -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \
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-I. -I./include/uapi -I$(APIDIR) \
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-I$(BPFDIR) -I$(abspath $(OUTPUT)/../usr/include)
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CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \
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-Wno-compare-distinct-pointer-types
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$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline
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$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline
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$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
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# Build BPF object using Clang
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# $1 - input .c file
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# $2 - output .o file
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# $3 - CFLAGS
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# $4 - LDFLAGS
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define CLANG_BPF_BUILD_RULE
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($(CLANG) $3 -O2 -target bpf -emit-llvm \
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-c $1 -o - || echo "BPF obj compilation failed") | \
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$(LLC) -mattr=dwarfris -march=bpf -mcpu=probe $4 -filetype=obj -o $2
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endef
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# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
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define CLANG_NOALU32_BPF_BUILD_RULE
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($(CLANG) $3 -O2 -target bpf -emit-llvm \
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-c $1 -o - || echo "BPF obj compilation failed") | \
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$(LLC) -march=bpf -mcpu=v2 $4 -filetype=obj -o $2
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endef
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# Similar to CLANG_BPF_BUILD_RULE, but using native Clang and bpf LLC
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define CLANG_NATIVE_BPF_BUILD_RULE
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($(CLANG) $3 -O2 -emit-llvm \
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-c $1 -o - || echo "BPF obj compilation failed") | \
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$(LLC) -march=bpf -mcpu=probe $4 -filetype=obj -o $2
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endef
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# Build BPF object using GCC
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define GCC_BPF_BUILD_RULE
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$(BPF_GCC) $3 $4 -O2 -c $1 -o $2
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endef
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# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on
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# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES.
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# Parameters:
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# $1 - test runner base binary name (e.g., test_progs)
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# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc)
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define DEFINE_TEST_RUNNER
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TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2
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TRUNNER_BINARY := $1$(if $2,-)$2
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TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \
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$$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c)))
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TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \
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$$(filter %.c,$(TRUNNER_EXTRA_SOURCES)))
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TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES))
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TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h
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TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \
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$$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c)))
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# Evaluate rules now with extra TRUNNER_XXX variables above already defined
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$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2))
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endef
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# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and
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# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with:
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# $1 - test runner base binary name (e.g., test_progs)
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# $2 - test runner extra "flavor" (e.g., no_alu32, gcc-bpf, etc)
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define DEFINE_TEST_RUNNER_RULES
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ifeq ($($(TRUNNER_OUTPUT)-dir),)
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$(TRUNNER_OUTPUT)-dir := y
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$(TRUNNER_OUTPUT):
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mkdir -p $$@
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endif
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# ensure we set up BPF objects generation rule just once for a given
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# input/output directory combination
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ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),)
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$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y
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$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.o: \
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$(TRUNNER_BPF_PROGS_DIR)/%.c \
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$(TRUNNER_BPF_PROGS_DIR)/*.h \
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$$(BPF_HELPERS) | $(TRUNNER_OUTPUT)
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$$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \
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$(TRUNNER_BPF_CFLAGS), \
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$(TRUNNER_BPF_LDFLAGS))
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endif
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# ensure we set up tests.h header generation rule just once
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ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),)
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$(TRUNNER_TESTS_DIR)-tests-hdr := y
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$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c
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$$(shell ( cd $(TRUNNER_TESTS_DIR); \
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echo '/* Generated header, do not edit */'; \
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ls *.c 2> /dev/null | \
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sed -e 's@\([^\.]*\)\.c@DEFINE_TEST(\1)@'; \
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) > $$@)
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endif
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# compile individual test files
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# Note: we cd into output directory to ensure embedded BPF object is found
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$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \
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$(TRUNNER_TESTS_DIR)/%.c \
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$(TRUNNER_EXTRA_HDRS) \
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$(TRUNNER_BPF_OBJS) \
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$$(BPFOBJ) | $(TRUNNER_OUTPUT)
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cd $$(@D) && $$(CC) $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F)
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$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \
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%.c \
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$(TRUNNER_EXTRA_HDRS) \
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$(TRUNNER_TESTS_HDR) \
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$$(BPFOBJ) | $(TRUNNER_OUTPUT)
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$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@
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$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT)
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ifneq ($2,)
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# only copy extra resources if in flavored build
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cp -a $$^ $(TRUNNER_OUTPUT)/
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endif
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$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \
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$(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \
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| $(TRUNNER_BINARY)-extras
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$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@
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endef
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# Define test_progs test runner.
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TRUNNER_TESTS_DIR := prog_tests
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TRUNNER_BPF_PROGS_DIR := progs
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TRUNNER_EXTRA_SOURCES := test_progs.c cgroup_helpers.c trace_helpers.c \
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flow_dissector_load.h
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TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read \
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$(wildcard progs/btf_dump_test_case_*.c)
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TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
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TRUNNER_BPF_CFLAGS := -I. -I$(OUTPUT) $(BPF_CFLAGS) $(CLANG_CFLAGS)
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TRUNNER_BPF_LDFLAGS := -mattr=+alu32
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$(eval $(call DEFINE_TEST_RUNNER,test_progs))
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# Define test_progs-no_alu32 test runner.
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TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE
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TRUNNER_BPF_LDFLAGS :=
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$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32))
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# Define test_progs BPF-GCC-flavored test runner.
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ifneq ($(BPF_GCC),)
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TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE
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TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc)
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TRUNNER_BPF_LDFLAGS :=
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$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc))
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endif
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# Define test_maps test runner.
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TRUNNER_TESTS_DIR := map_tests
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TRUNNER_BPF_PROGS_DIR := progs
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TRUNNER_EXTRA_SOURCES := test_maps.c
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TRUNNER_EXTRA_FILES :=
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TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built)
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TRUNNER_BPF_CFLAGS :=
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TRUNNER_BPF_LDFLAGS :=
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$(eval $(call DEFINE_TEST_RUNNER,test_maps))
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# Define test_verifier test runner.
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# It is much simpler than test_maps/test_progs and sufficiently different from
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# them (e.g., test.h is using completely pattern), that it's worth just
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# explicitly defining all the rules explicitly.
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verifier/tests.h: verifier/*.c
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$(shell ( cd verifier/; \
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echo '/* Generated header, do not edit */'; \
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echo '#ifdef FILL_ARRAY'; \
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ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \
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echo '#endif' \
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) > verifier/tests.h)
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$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT)
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$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
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# Make sure we are able to include and link libbpf against c++.
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$(OUTPUT)/test_cpp: test_cpp.cpp $(BPFOBJ)
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$(CXX) $(CFLAGS) $^ $(LDLIBS) -o $@
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EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) \
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prog_tests/tests.h map_tests/tests.h verifier/tests.h \
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feature $(OUTPUT)/*.o $(OUTPUT)/no_alu32 $(OUTPUT)/bpf_gcc
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